Who Am I?

  1. I am the only phylum that uses tracheae for its respiratory system.
  2. I have a nerve net, water vascular system and gills.
  3. My circulatory system is closed and I have lungs.
  4. My phylum has two types of circulatory systems, open and closed, depending on how advanced the organism is.
  5. I have one complex brain and spinal cord and either gills or lungs.
  6. I don’t have a brain, only a nerve net, and a gastrovascular cavity.
  7. I have two small brains and my respiratory system requires my body to stay moist.
  8. I have an alimentary canal, an exoskeleton, and I carry my house on my back.
  9. I live in a pineapple under the sea.
  10. I have an endoskeleton, an alimentary canal, and a large brain.
  11. I am a sluggish creature with gills and an open circulatory system.
  12. I have a food vacuole and breathe through my body surface.
  13. I am a phylum that lacks a nervous, skeletal, and circulatory system.
  14. My digestive system has two openings and my skeleton is supported by water.
  15. Water supports my skeleton and I have a gastrovascular cavity and nerve net.
  16. My respiratory system consists of many tracheae and I have one small brain.
  17. I am very unique because I have two small brains and two nerve cords.
  18. I have a gastrovascular cavity, breathe through my body surface, but I don’t have a brain.
  19. I have an alimentary canal, closed circulatory system, and one small brain and nerve cord.
  20. I have a hydrostatic skeleton, two small brains, and a gastrovascular cavity for my digestive and circulatory systems.
  21. I am the only phylum that uses a water vascular system for circulation.
  22. Most of the members of my phylum have an open circulatory system and gills.
  23. I have an alimentary canal and my nervous system is a nerve net.
  24. I am a loose collection of cells with no circulatory, nervous, or skeletal system.
  25. I have an endoskeleton, a closed circulatory system, and a large brain.